Ag2O-decorated WO3 nanorods synthesized by soft-template-aided solvothermal route for endorsed visible-light photoreduction of CO2 into methanol

被引:10
作者
Mohamed, Reda M. [1 ]
Shawky, Ahmed [2 ]
机构
[1] King Abdulaziz Univ, Fac Sci, Chem Dept, POB 80200, Jeddah 21589, Saudi Arabia
[2] Cent Met R&D Inst CMRDI, Nanomat & Nanotechnol Dept, Adv Mat Div, POB 87 Helwan, Cairo 11421, Egypt
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2023年 / 11卷 / 03期
关键词
CO2; utilization; Heterojunction oxide; Nanorods; Photocatalysis; Renewable fuel; FACILE SYNTHESIS; EFFICIENT PHOTOCATALYST; HETEROJUNCTION; PHOTODEGRADATION; REDUCTION; HETEROSTRUCTURES; NANOCOMPOSITES; DEGRADATION; FABRICATION; HERBICIDE;
D O I
10.1016/j.jece.2023.110167
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this work, a solvothermal process with occurrence of mixed surfactants is applied to produce silver oxide (Ag2O)-supported tungsten trioxide (WO3) nanorods. The produced nanocomposites exhibit an extended visible -light harvesting by Ag2O decoration from 1.0 to 4.0 wt% with a bandgap of 1.96 eV compared to 2.83 eV for pure WO3. The surface textural analysis proved the formation of mesostructured nanocomposites with surface area range of 203-219 m2g-1. The as-synthesized nanostructures were applied for the photoreduction of CO2 to methanol (CH3OH). The tuned dose of 2.0 gL-1 3% Ag2O/WO3 has generated 174.4 & mu;mol g-1 h-1 CH3OH under visible light illumination. These innovative Ag2O-decorated WO3 nanorods also display photocatalytic stability in five cycles. The magnificent photoactivity of this photocatalyst is attributed to the improved charge separation by the synergetic impact of controlled Ag2O inclusion. The presented work proposes the ability of metal oxide p-n heterojunctions for visible light CO2 utilization.
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页数:8
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